IST is currently not observed because DST is not applied. See Greenwich Mean Time instead.
IST will be observed after
IST (Irish Standard Time) is one of the well-known names of UTC+1 time zone which is 1h. ahead of UTC (Coordinated Universal Time).The time offset from UTC can be written as +01:00.
It's used as a DST (summer daylight saving time).During the winter, GMT - Greenwich Mean Time(UTC+0) is in use.
Some locations use GMT all year long.
|BST||British Summer Time|
|CET||Central European Time|
|WAT||West Africa Time|
|WEST||Western European Summer Time|
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